Episode 76: Sean Bowe on SNARKs, Trusted Setups & Elliptic Curve Cryptography

In this week’s episode, we welcome special guest Sean Bowe. Sean is an engineer at the Electric Coin Company and the author of the Sprout and Sapling Zcash trusted set ups and much of the underlying cryptography of the protocol. We had a chance to chat about his history, what got him into the topic, some of the joys & challenges to working with SNARKs, and what ideas are inspiring him.

We also covered the story of Zcash and the Powers of Tau trusted set up, MPCs, the story of the bug, SONICs, ZEXE, the BLS12-381 Elliptic Curve Construction

Early on in the episode, we mention the Radiolab episode about the zcash trusted setup: https://archive.org/details/radiolab_podcast17crypto_zcash_ceremony

Questions from the audience: https://twitter.com/AnnaRRose/status/1122818062061797376

We also mention some of our previous ZK centric episodes that can be found here: https://www.zeroknowledge.fm/zkseries


Special thanks to this week's sponsor: Trail of Bits

Trail of Bits is offering a service for young technology companies who could use expert security support, but aren't quite at a stage to hire their own team. The service includes staffing a #security channel to answer questions, review high risk PRs, and integrate the latest in continuous testing into your build pipeline. Visit www.trailofbits.com for help securing your product.


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Previous Episodes

Episode 320: A Deep Dive into Shared Sequencers with Espresso’s Ben Fisch

In this week’s episode, Anna (https://twitter.com/annarrose) and Brendan Farmer (https://twitter.com/_bfarmer) catch up with Ben Fisch (https://twitter.com/benafisch), CEO of Espresso Systems (https://www.espressosys.com/). They explore the inner workings of the current L2 sequencing landscape and then discuss how a shared sequencing marketplace like Espresso works. They touch on how MEV plays a part in the new system, how the role of the sequencer can be separated into subroles, how all these parts will work together in such a system and much more.

Episode 319: The Past & Present of the L2 Landscape with Jordi Baylina

In this week’s episode, Anna catches up with Jordi Baylina, OG Ethereum contributor and Polygon zkEVM Technical Lead. They cover what Jordi has been working on since he was last on the show in 2021. Back then, zkEVMs were still just an idea. Now that many of these systems have launched, they have a chance to look at how these fit into the general L2 landscape.

They cover Jordi’s view on engineering decentralized systems and how these are rolled out, and the recent research from Polygon, including their AggLayer proposal. They wrap up on what inspires him to keep contributing in the space.

Episode 318: Threshold Signature Schemes & FROST with Chelsea Komlo

In this week’s episode, Anna and Nico chat with Chelsea Komlo, Chief Scientist for the Zcash Foundation and member of the Cryptography, Security, and Privacy lab at the University of Waterloo.

They discuss what sparked Chelsea’s interest in cryptography research, starting with her work contributing to Tor, to her move to Zcash and her PhD work on Threshold Signature Schemes. They define some important terms around different signature schemes and discuss possible optimizations that can be used to make these more performant. They then dive into her work on the FROST Threshold Signature Scheme plus some new upcoming work.

Episode 317: Enhancing On-Chain Intelligence with Ritual

This week, Anna and Tarun chat with Niraj Pant and Anish Agnihotri from Ritual. They kick off by revisiting the AIxCrypto intersection before diving into the Ritual product and its goals around developing open access AI infrastructure. They explore the opportunities that open up when you bring ML to smart contracts.

Bonus: zkSummit11 reminder!

Quick reminder about our upcoming zkSummit 11 event. Happening in Athens on April 10th, we once again bring together the top researchers and engineers working in zk to share their latest research and new findings.

Episode 316: Alin Tomescu on Distributed On-chain Randomness and Keyless Accounts

In this week’s episode, Anna and Nico chat with Alin Tomescu, founding team member and Head of Cryptography at Aptos Labs. They discuss Alin’s journey to Aptos and his work on distributed on-chain randomness as well as the new Aptos Keyless project. They cover the Keyless accounts architecture, how the flow works for the user and some of the subtleties in the approach they have taken.

Episode 315: ZK Hack Ecosystem & Winners of ZK Hack IV

This week’s episode is a little different from the usual and is split into two parts with Anna and Kobi exploring the history of ZK Hack, its origins and how the event has evolved into what it is today, including current activity in the ZK Hack ecosystem. The second half of the show splits off into Anna and Nico chatting the top 3 hackers from ZK Hack IV Online, which wrapped back in February. Each mini interview catches up with one of the winners and dives into what it was like to hack on the puzzles, which their favourites were and how they can be improved in the future.

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